error building DB_File in perl: missing -ldb

Some time ago [1] I mentioned problems with compiling lang/perl5 that
relate to the DB_File module. The problem is that the linker command
includes -ldb but because NetBSD does not provide this library the
build fails. I propose fixing this by installing a hints file
(cpan/DB_File/hints/netbsd.pl) with the following contents:
# -ldb does not exist on NetBSD so avoid trying to include it
$self->{LIBS} = [''];
That corrects the set of libraries used for linking this module and
the build completes.
Thoughts? Better ideas?
Cheers,
Brook
[1] http://mail-index.netbsd.org/tech-pkg/2011/08/23/msg007582.html